/Engine/Plugins/Experimental/MeshModelingToolsetExp/Source/MeshModelingToolsEditorOnlyExp/Public/PolygonOnMeshTool.h
Support for hover and click, for drawing polygon. This should be in theUCollectSurfacePathMechanic, but we don't support dynamically changing input behavior set yet
virtual bool HitTest ( const FRay & Ray, [FHitResult](API\Runtime\Engine\Engine\FHitResult) & OutHit )